Eight months baby fever rash may be toddler rash, measles, scarlet fever, etc., if it is toddler rash, the main heat treatment, etc., if it is measles should be based on the symptoms of treatment, etc., scarlet fever should be anti-infectious. 1.toddler rash: eight months baby fever rash common disease is toddler rash, manifested as a persistent high fever 3~5 days after the heat out of the rash, the treatment is mainly to control the body temperature, can be given to the cold compresses, warm water bath and other physical methods to reduce the temperature, follow the doctor’s instructions to use antipyretic drugs, such as acetaminophen, ibuprofen and so on. 2. Measles: mainly manifested as fever, runny nose, cough, oral measles mucous membrane spots, conjunctivitis, maculopapular rash all over the body. Treatment is mainly symptomatic, high fever using ibuprofen and other antipyretic, cough can be used budesonide nebulizer inhalation to reduce airway inflammatory response, combined with bacterial infections can be used cephalosporin or penicillin antibiotic treatment. 3. Scarlet fever: caused by streptococcal infection, manifested as pharyngitis, fever, bright red rash and other symptoms. Treatment mainly uses antibiotics, such as penicillin (amoxicillin) and so on. Fever and rash of this disease should be under the guidance of a doctor to clarify the cause of the disease and reasonable treatment.